package com.shiguiwu.springmybatis.util;

import cn.hutool.crypto.SecureUtil;
import org.apache.catalina.security.SecurityUtil;

import java.security.MessageDigest;

/**
 * @description: 加密
 * @author: stone
 * @date: Created by 2021/1/11 15:54
 * @version: 1.0.0
 * @pakeage: com.shiguiwu.springmybatis.util
 */
public class SHA1 {
    private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5',
            '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
    private static String getFormattedText(byte[] bytes) {
        int len = bytes.length;
        StringBuilder buf = new StringBuilder(len * 2);
        for (int j = 0; j < len; j++) {
            buf.append(HEX_DIGITS[(bytes[j] >> 4) & 0x0f]);
            buf.append(HEX_DIGITS[bytes[j] & 0x0f]);
        }
        return buf.toString();
    }
    public static String encode(String str) {
        if (str == null) {
            return null;
        }
        try {
            MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
            messageDigest.update(str.getBytes());
            return getFormattedText(messageDigest.digest());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        String a = "是鬼屋";

        System.out.println(encode(a));
        System.out.println(SecureUtil.sha1(a));
    }
}
